Finding the Fourth Proportional to 42.42, 58.78 and 41.92

Step by Step Solution

1. Step 1: Write the proportion equation
   42.42 : 58.78 = 41.92 : x
2. Step 2: Convert to fraction form
   42.42/58.78 = 41.92/x
3. Step 3: Cross multiply
   42.42x = 58.78 × 41.92
4. Step 4: Simplify right side
   42.42x = 2,464.06
5. Step 5: Solve for x
   x = 2,464.06/42.42
6. Step 6: Final answer
   x = 58.09